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Finding the Fourth Proportional to 382,971.62, 528,491.30 and 210,888.24

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Solution

The fourth proportional to 382,971.62, 528,491.30 and 210,888.24 is: 291,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,971.62 : 528,491.30 = 210,888.24 : x
  2. Step 2: Convert to fraction form
    382,971.62/528,491.30 = 210,888.24/x
  3. Step 3: Cross multiply
    382,971.62x = 528,491.30 × 210,888.24
  4. Step 4: Simplify right side
    382,971.62x = 111,452,599,057.87
  5. Step 5: Solve for x
    x = 111,452,599,057.87/382,971.62
  6. Step 6: Final answer
    x = 291,020.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.